Browsing by UP Author "Paweska, Janusz Tadeusz"

Browsing by UP Author "Paweska, Janusz Tadeusz"

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  • Genetic determinants of virulence in pathogenic lineage 2 West Nile virus strains 
    Botha, Elizabeth Magdelena; Markotter, Wanda; Wolfaardt, Marianne; Paweska, Janusz Tadeusz; Swanepoel, Robert; Palacios, Gustavo; Nel, Louis Hendrik; Venter, Marietjie (Coordinating Center for Infectious Diseases, Centers for Disease Control and Prevention, 2008-02)
    We determined complete genome sequences of lineage 2 West Nile virus (WNV) strains isolated from patients in South Africa who had mild or severe WNV infections. These strains had previously been shown to produce either ...
  • Human rabies associated with domestic cat exposures in South Africa, 1983–2018 
    Grobbelaar, Antoinette A.; Blumberg, Lucille Hellen; Dermaux-Msimang, Veerle; Le Roux, Chantel A.; Moolla, Naazneen; Paweska, Janusz Tadeusz; Weyer, Jacqueline (AOSIS OpenJournals, 2020-07-06)
    Rabies is a fatal encephalitic disease caused by lyssaviruses belonging to the family Rhabdoviridae. At the time of this report, a total of 16 species of lyssaviruses, which included the prototype rabies virus (RABV), ...
  • Indirect enzyme-linked immunosorbent assay for the detection of antibody against Rift Valley fever virus in domestic and wild ruminant sera 
    Paweska, Janusz Tadeusz; Swanepoel, Robert; Williams, R.; Cohen, A.S.; Grobbelaar, Antoinette A.; Croft, J.E.; Gerdes, Gertruida Hermanna; Wright, Isabel M.; Van Dijk, A.A.; Smith, S.J.; Boomker, Jacob Diederik Frederik (Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2003)
    An indirect enzyme-linked immunosorbent assay (I-ELISA) for the detection of specific IgG immunoglobulins against Rift Valley fever virus (RVFV) was validated in-house. A total of 3055 sera from sheep (n = 1 159), goats ...
  • An investigation into an outbreak of Rift Valley fever on a cattle farm in Bela-Bela, South Africa, in 2008 
    Mapaco, Lourenco Paulo; Coetzer, Jacobus A.W.; Paweska, Janusz Tadeusz; Venter, Estelle Hildegard (OpenJournals Publishing, 2012-10-04)
    In 2008, a suspected outbreak of Rift Valley fever (RVF) was reported on a farm in the Bela-Bela area, Limpopo Province, South Africa. Seven calves died on the affected dairy farm, where no RVF vaccination programme was ...
  • Isolation of a novel fusogenic orthoreovirus from Eucampsipoda africana bat flies in South Africa 
    Jansen van Vuren, Petrus; Wiley, Michael; Palacios, Gustavo; Storm, Nadia; McCulloch, Stewart D.; Markotter, Wanda; Birkhead, Monica; Kemp, Alan; Paweska, Janusz Tadeusz (MDPI Publishing, 2016-02-29)
    We report on the isolation of a novel fusogenic orthoreovirus from bat flies (Eucampsipoda africana) associated with Egyptian fruit bats (Rousettus aegyptiacus) collected in South Africa. Complete sequences of the ten ...
  • Isolation of a novel orthobunyavirus from bat flies (Eucampsipoda africana) 
    Jansen van Vuren, Petrus; Wiley, Michael R.; Palacios, Gustavo; Storm, Nadia; Markotter, Wanda; Birkhead, Monica; Kemp, Alan; Paweska, Janusz Tadeusz (Microbiology Society, 2017-05)
    The Bunyaviridae family comprises viruses causing diseases of public and veterinary health importance, including viral haemorrhagic and arboviral fevers. We report the isolation, identification and genome characterization ...
  • Lack of Marburg virus transmission from experimentally infected to susceptible in-contact Egyptian fruit bats 
    Paweska, Janusz Tadeusz; Jansen van Vuren, Petrus; Fenton, Karla A.; Graves, Kerry; Grobbelaar, Antoinette A.; Moolla, Naazneen; Leman, Patricia; Weyer, Jacqueline; Storm, Nadia; McCulloch, Stewart D.; Scott, Terence Peter; Markotter, Wanda; Odendaal, Lieza; Clift, Sarah Jane; Geisbert, Thomas W.; Hale, Martin J.; Kemp, Alan (Oxford University Press, 2015)
    Egyptian fruit bats (Rousettus aegyptiacus) were inoculated subcutaneously (n = 22) with Marburg virus (MARV). No deaths, overt signs of morbidity, or gross lesions was identified, but microscopic pathological changes ...
  • Large-scale international validation of an indirect ELISA based on recombinant nucleocapsid protein of rift valley fever virus for the detection of IgG antibody in domestic ruminants 
    Paweska, Janusz Tadeusz; Jansen van Vuren, Petrus; Msimang, Veerle; Lo, Modu Moustapha; Thiongane, Yaya; Mulumba-Mfumu, Leopold K.; Mansoor, Alqadasi; Fafetine, Jose M.; Magona, Joseph W.; Boussini, Hiver; Bazanow, Barbara; Wilson, William C.; Pepin, Michel; Unger, H.; Viljoen, Gerrit (MDPI, 2021-08)
    Diagnostic performance of an indirect enzyme-linked immunosorbent assay (I-ELISA) based on a recombinant nucleocapsid protein (rNP) of the Rift Valley fever virus (RVFV) was validated for the detection of the IgG antibody ...
  • Lineage 2 West Nile virus as cause of fatal neurologic disease in horses, South Africa 
    Venter, Marietjie; Human, Stacey; Zaayman, Dewald; Gerdes, Gertruida Hermanna; Williams, June Heather; Steyl, Johan Christian Abraham; Leman, Patricia A.; Paweska, Janusz Tadeusz; Setzkorn, Hildegard; Rous, Gavin; Murray, Sue; Parker, Rissa; Donnellan, Cynthia Mary Bridget; Swanepoel, Robert (Coordinating Center for Infectious Diseases, Centers for Disease Control and Prevention, 2009-05-06)
    Serologic evidence suggests that West Nile virus (WNV) is widely distributed in horses in Southern Africa. However, because few neurologic cases have been reported, endemic lineage 2 strains were postulated to be non-pathogenic ...
  • Lyssaviruses in insectivorous bats, South Africa, 2003–2018 
    Coertse, Jessica; Grobler, Colyn Stefan; Sabeta, Claude Taurai; Seamark, E.C.J.; Kearney, Teresa; Paweska, Janusz Tadeusz; Markotter, Wanda (Centers for Disease Control and Prevention, 2020-12)
    We detected 3 lyssaviruses in insectivorous bats sampled in South Africa during 2003–2018. We used phylogenetic analysis to identify Duvenhage lyssavirus and a potentially new lyssavirus, provisionally named Matlo ...
  • Mammarenaviruses of rodents, South Africa and Zimbabwe 
    Grobbelaar, Antoinette; Jardine, Jocelyn; Burt, Felicity J.; Shepherd, Alasdair J.; Shepherd, Susan P.; Leman, Patricia A.; Kemp, Alan; Braack, L.E.O.; Weyer, Jacqueline; Paweska, Janusz Tadeusz; Swanepoel, Robert (Centers for Disease Control and Prevention, 2021-12)
    We conducted a survey for group-specific indirect immunofluorescence antibody to mammarenaviruses by using Lassa fever and Mopeia virus antigens on serum specimens of 5,363 rodents of 33 species collected in South Africa ...
  • Marburg virus infection in Egyptian rousette bats, South Africa, 2013-2014 
    Paweska, Janusz Tadeusz; Jansen van Vuren, Petrus; Kemp, Alan; Storm, Nadia; Grobbelaar, Antoinette A.; Wiley, Michael R.; Palacios, Gustavo; Markotter, Wanda (Centers for Disease Control and Prevention, 2018)
    We detected a high seroprevalence of Marburg virus (MARV) antibodies in fruit bats in South Africa; 19.1% of recaptured bats seroconverted. The MARV RNA isolated closely resembled the 1975 Ozolin strain. These findings ...
  • Masstag polymerase chain reaction for differential diagnosis of viral hemorrhagic fevers 
    Palacios, Gustavo; Briese, Thomas; Kapoor, Vishal; Jabado, Omar; Liu, Zhiqiang; Venter, Marietjie; Zhai, Junhui; Renwick, Neil; Grolla, Allen; Geisbert, Thomas W.; Drosten, Christian; Towner, Jonathan S.; Ju, Jingyue; Paweska, Janusz Tadeusz; Nichol, Stuart T.; Swanepoel, Robert; Feldmann, Heinz; Jahrling, Peter B.; Lipkin, Ian W. (Centers for Disease Control and Prevention, 2006-04)
    Viral hemorrhagic fevers are associated with high rates of illness and death. Although therapeutic options are limited, early differential diagnosis has implications for containment and may aid in clinical management. We ...
  • Molecular epidemiology of Rift Valley fever virus 
    Grobbelaar, Antoinette A.; Weyer, Jacqueline; Leman, Patricia A.; Kemp, Alan; Paweska, Janusz Tadeusz; Swanepoel, Robert (Coordinating Center for Infectious Diseases, Centers for Disease Control and Prevention, 2011-12)
    Phylogenetic relationships were examined for 198 Rift Valley fever virus isolates and 5 derived strains obtained from various sources in Saudi Arabia and 16 countries in Africa during a 67-year period (1944–2010). A ...
  • Multiplex real-time RT-PCR for detection and distinction of Spondweni and Zika virus 
    Rademan, Rochelle; Markotter, Wanda; Paweska, Janusz Tadeusz; Jansen van Vuren, Petrus (Elsevier, 2019-04)
    Zika (ZIKV) and Spondweni viruses (SPOV) are closely related mosquito borne flaviviruses in the Spondweni serogroup. The co-circulation and similar disease presentation following ZIKV and SPOV infection necessitates the ...
  • Next-generation sequencing of southern African Crimean-Congo haemorrhagic fever virus isolates reveals a high frequency of M segment reassortment 
    Goedhals, Dominique; Bester, P.A.; Paweska, Janusz Tadeusz; Swanepoel, Robert; Burt, F.T. (Cambridge University Press, 2014-05-01)
    Crimean Congo haemorrhagic fever virus (CCHFV) is a bunyavirus with a single-stranded RNA genome consisting of three segments (S, M, L), coding for the nucleocapsid protein, envelope glycoproteins and RNA polymerase, ...
  • Nomenclature- and database-compatible names for the two Ebola virus variants that emerged in Guinea and the Democratic Republic of the Congo in 2014 
    Kuhn, Jens H.; Andersen, Kristian G.; Baize, Sylvain; Bào, Yīmíng; Bavari, Sina; Berthet, Nicolas; Blinkova, Olga; Brister, J. Rodney; Clawson, Anna N.; Fair, Joseph; Gabriel, Martin; Garry, Robert F.; Gire, Stephen K.; Goba, Augustine; Gonzalez, Jean-Paul; Günther, Stephan; Happi, Christian T.; Jahrling, Peter B.; Kapetshi, Jimmy; Kobinger, Gary; Kugelman, Jeffrey R.; Leroy, Eric M.; Maganga, Gael Darren; Mbala, Placide K.; Moses, Lina M.; Muyembe-Tamfum, Jean-Jacques; N’Faly, Magassouba; Nichol, Stuart T.; Omilabu, Sunday A.; Palacios, Gustavo; Park, Daniel J.; Paweska, Janusz Tadeusz; Radoshitzky, Sheli R.; Rossi, Cynthia A.; Sabeti, Pardis C.; Schieffelin, John S.; Schoepp, Randal J.; Sealfon, Rachel; Swanepoel, Robert; Towner, Jonathan S.; Wada, Jiro; Wauquier, Nadia; Yozwiak, Nathan L.; Formenty, Pierre (MDPI Publishing, 2014-11)
    In 2014, Ebola virus (EBOV) was identified as the etiological agent of a large and still expanding outbreak of Ebola virus disease (EVD) in West Africa and a much more confined EVD outbreak in Middle Africa. Epidemiological ...
  • Nosocomial outbreak of novel Arenavirus infection, southern Africa 
    Paweska, Janusz Tadeusz; Sewlall, Nivesh H.; Ksiazek, Thomas G.; Blumberg, Lucille Hellen; Hale, Martin J.; Lipkin, Ian W.; Weyer, Jacqueline; Nichol, Stuart T.; Rollin, Pierre E.; McMullan, Laura K.; Paddock, Christopher D.; Briese, Thomas; Mnyaluza, Joy; Dinh, Thu-Ha; Mukonka, Victor; Ching, Pamela; Duse, Adriano; Richards, Guy A.; De Jong, Gillian; Cohen, Cheryl; Ikalafeng, Bridget; Mugero, Charles; Asomugha, Chika; Malotle, Mirriam M.; Nteo, Dorothy M.; Misiani, Eunice; Swanepoel, Robert; Zaki, Sherif R. (Coordinating Center for Infectious Diseases, Centers for Disease Control and Prevention, 2009-10)
    A nosocomial outbreak of disease involving 5 patients, 4 of whom died, occurred in South Africa during September–October 2008. The first patient had been transferred from Zambia to South Africa for medical management. Three ...
  • A novel adenovirus isolated from the Egyptian fruit bat in South Africa is closely related to recent isolates from China 
    Jansen van Vuren, Petrus; Allam, Mushal; Wiley, Michael R.; Ismail, Arshad; Storm, Nadia; Birkhead, Monica; Markotter, Wanda; Palacios, Gustavo; Paweska, Janusz Tadeusz (Nature Publishing Group, 2018-06-25)
    Recently a number of novel adenoviruses have been isolated from diverse bat species and from diverse geographical locations. We describe the isolation of a novel adenovirus (Family Adenoviridae, genus Mastadenovirus) ...
  • Outbreak of Rift Valley fever affecting veterinarians and farmers in South Africa, 2008 
    Archer, Brett N.; Weyer, Jacqueline; Paweska, Janusz Tadeusz; Nkosi, Deliwe; Leman, Patricia A.; Tint, Khin-San; Blumberg, Lucille Hellen (Health and Medical Publishing Group, 2011-04)
    BACKGROUND: During 2008, Rift Valley fever (RVF) virus re-emerged in South Africa as focal outbreaks in several provinces. Aims. To investigate an outbreak affecting cattle farmers and farm workers, and the staff and ...